• Effect of ball-milling time on the structural

    Increasing the ball-milling time to 20 h led to the disappearance of the Sn and Nb diffraction due to the grain size reduction and/or accumulation of mechanical strains (Fig. 5d). The formation of an hcp α -Ti phase after 20 h ball-milling can be attributed to the dissolution of the alloying elements in the Ti lattice.

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  • Effect of ball-milling time on the structural

    The current study has been investigating the effect of the ball-milling variable of time on the structural characteristics and pore morphology of a biomedical porous Ti–16Sn–4Nb (wt.%) alloy. The alloy was synthesized using high-energy ball milling for different periods of time, and the porous Ti–16Sn–4Nb alloy was fabricated by using a

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  • A new approach to fabricate superconducting NbTi alloys

    with nominal composition of Nb-47wt% Ti was sealed together with 200 stainless steel balls (10mm in diameter) in a cylindrical steel pot under an argon atmosphere. The ball-to-powder weight ratio was 10:1. The milling pot was loaded onto a Fristsch P6 planetary ball mill and rotated at a 200rpm at room temperature in cycles of 20min milling

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  • Electrochemical corrosion and bioactivity of Ti-Nb-Sn

    Electrochemical corrosion and bioactivity of Ti-Nb-Sn-hydroxyapatite composites fabricated by pulse current activated sintering. Highlights•Corrosion potential and current of TNS/HA12 composite are − 0.261 V and 0.18 μA/cm2.•In vitro cell culture results indicate that TNS/HA12 composite has good bioactivity.•Milling time affects the corrosion resistant and bioactivity of sintered

  • Amorphous Ni 59 Nb 40 Pt (1-x) Y x (Y = Sn, Ru; x = 0%, 0

    This work presents the electrochemical response to methanol deprotonation and CO oxidation in acid media (HClO 4 ) of different compositional amorphous alloys obtained by ball milling technique. These powders with compositions Ni 59 Nb 40 Pt (1-x) Y x (x = 0%, 0.4% atm, Y = Sn, Ru) are used as modified carbon paste electrodes (MCPEs), and mainly as anodes.

  • Ball mill Wikipedia

    A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering.It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from near the top of the shell. A ball mill consists of a hollow cylindrical shell rotati

  • Effect of Nb and Sn on the transformation of α-Ti to β-Ti

    This study was conducted to observe the phase transformation of Ti-35 %Nb-2.5 %Sn during milling for various milling times using a mixing machine and a high-energy ball milling machine (HEBM). In this work, niobium was chosen as the β stabilizer and tin as the reducer of the elastic modulus.

  • High-Energy Ball Mill Processing IPEN

    High-Energy Ball Mill Processing Edval G. Araújo, Ricardo M. Leal Neto, Marina F. Pillis, Francisco Ambrózio Filho Sn in Nb 0 25 Sn in Fe 0 66 Al in Pd 15 50 Cu in Al 0 33 Co in B 0 50 Ga in As 0 50 Fetch and coworkers [6], studying the production of pure nanocrystalline metals by milling, obtained fcc metals (Fe, Cr, Nb, W) and hc metals

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  • Atomic disorder induced by mechanical milling in the Nb 3

    The behavior of the intermetallic A15 compound Nb 3 Au in the early stage of mechanical milling was studied. By following the degradation of the superconducting transition temperature and the increase of the lattice parameter as a function of milling time, it was found that Nb 3 Au exhibits atomic (chemical) disorder due to milling.

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  • Mount Pleasant Mine (Brunswick Tin Mines), Saint George

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  • Mount Pleasant Mine (Brunswick Tin Mines), Saint George

    Mount Pleasant Mine (Brunswick Tin Mines), Saint George Parish, Charlotte Co., New Brunswick, Canada : A tungsten-molybdenum-bismuth-tin mine started at the end of 1983. Located 35 miles SW of Fredericton. Formerly owned by Billiton Canada (Brunswick Tin Mines, Ltd.

  • Effect of ball milling on the local magnetic flux

    Preprint of Journal of Alloys and Compounds 717 (2017) 164-170 DOI: 10.1016/j.jallcom.2017.05.083 1 Effect of ball milling on the local magnetic flux distribution and microstructure of in situ Fe/MgB 2 conductors C. Laliena1, T. Qureishy 2, 1E.Martínez1, R. Navarro,P. Mikheenko,T. H. Johansen2,3 and P. Kováč4 1Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC –Universidad de

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  • Development of sputtered Nb 3 Sn films on IOPscience

    The critical temperature twice as high as niobium and the high superheating field of Nb 3 Sn motivate the superconducting radiofrequency (SRF) community to develop methods to apply this material to accelerating cavities [].Nb 3 Sn cannot be used as a bulk material for cavity production due to its low thermal conductivity and brittle nature. Nevertheless, a thin film approach, in which a thin

  • Technics Ion Mill Etch Rates University of Minnesota

    Technics Ion Mill Etch Rates Material Rate (Å/min.) Material Rate (Å/min) Ag 100 Nb 20 Al 35 Ni 30 Al/Cu 5 NiCr 10 Al2O3 5 NiFe 20 Au 90 NiFeCo 5 AZ 1350 J 15 No 20 Bi 430 Pb 155 C 5 PbTe 150 CdS 50 Pd 50 Co 30 PMMA 20 Cr 20 Pt 45 CrSi 5 Rb 200 Cu

  • phase (Nb Supporting Information SnC) with Li-ions

    the dispersant with the molar ratio of Nb: Sn: C equal to 2: 1: 1. After milling, the mixed powders were dried in a vacuum oven and then heated to 1650 ℃ under Ar flow for 4 h in a tube furnace with a heating rate of 5 ℃ min-1 to obtain the Nb 2SnC powder. It was used for experiments without any further processing. However, the powder was

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  • 189 questions with answers in BALL MILLING Science topic

    Mar 25, 2020· Actually, it depends on several parameters such as the starting materials, milling speed, amount of ball, ball milling system etc. So, it will be better to optimize the parameter(s). View

  • Fabrication and phase-transformation issues in CTFF-MA

    May 13, 2002· The fabrication and properties of the A15 superconductors Nb-Sn-Ta, Nb-Al, and Nb-Al-Ge have been studied using a route involving mechanical alloying of intermediate phase powders, together with a continuous tube forming and filling (CTFF) wire fabrication method. The use and characteristics of the CTFF method for A15 materials is discussed.

  • Phase composition and microstructure of new Ti–Ta–Nb–Zr

    The study presents the results of the influence of high-energy ball-milling time on the structure of the new β-type Ti–Ta–Nb–Zr alloys for biomedical applications.Initial elemental powders were mechanically alloyed in a planetary high-energy ball mill at different milling times (from 10 to 90 h).

  • NIOSHTIC-2 Publications Search 10007522 Tin, Tantalum

    The 5-pct sn was further upgraded by fuming to give a concentrate containing approximately 60 pct sn. The recovery of the two products combined was 80 pct sn and 46 pct ta- Nb. A flowsheet with mill-design parameters resulted from the metallurgical testing. An economic analysis was made based on the proposed process.

  • Certificate of Analysis NIST

    Certificate of Analysis Standard Reference Material® 1762a Low Alloy Steel This Standard Reference Material (SRM) is a low alloy steel. This SRM is intended for use in the evaluation of chemical and instrumental methods of analysis and in calibra tion of analyses. A unit of SRM 1762a consists of a disk approximately 34 mm in diameter and 19 mm

  • CiteSeerX — MICROSTRUCTURE EVOLUTION OF TI-SN-NB ALLOY

    Results indicated that ball milling to 8 h led to the formation of a supersaturated hcp α-Ti and partial amorphous phase due to the solid solution of Sn and Nb into Ti lattice. The microstructure of the bulk sintered Ti-16Sn-4Nb alloy samples made from the powders at shorter ball milling times, i.e. 20 min- 2 h, exhibited a primary α

  • Evolution of Nb oxide nanoprecipitates in Cu during

    Microstructural evolution of Cu-Nb oxide nanocomposite alloys during ball milling is investigated using a two-step ball-milling approach. In the first step, Cu and Nb powders are milled to create a two-phase alloy comprising a Cu-rich matrix containing a high density of 20-to 30-nm Nb precipitates.

  • NIOSHTIC-2 Publications Search 10007522 Tin, Tantalum

    The 5-pct sn was further upgraded by fuming to give a concentrate containing approximately 60 pct sn. The recovery of the two products combined was 80 pct sn and 46 pct ta- Nb. A flowsheet with mill

  • Certificate of Analysis NIST

    Certificate of Analysis Standard Reference Material® 1762a Low Alloy Steel This Standard Reference Material (SRM) is a low alloy steel. This SRM is intended for use in the evaluation of chemical and

  • CiteSeerX — MICROSTRUCTURE EVOLUTION OF TI-SN-NB ALLOY

    Results indicated that ball milling to 8 h led to the formation of a supersaturated hcp α-Ti and partial amorphous phase due to the solid solution of Sn and Nb into Ti lattice. The microstructure of the bulk sintered Ti-16Sn-4Nb alloy samples made from the powders at shorter ball milling

  • Evolution of Nb oxide nanoprecipitates in Cu during

    Microstructural evolution of Cu-Nb oxide nanocomposite alloys during ball milling is investigated using a two-step ball-milling approach. In the first step, Cu and Nb powders are milled to create a two-phase alloy comprising a Cu-rich matrix containing a high density of 20-to 30-nm Nb

  • ChemInform Abstract: Obtaining and Stability Verification

    Apr 06, 2010· Read "ChemInform Abstract: Obtaining and Stability Verification of Superconducting Phases of the Nb—Al and Nb—Sn Systems by Mechanical Alloying and Low‐Temperature Heat

  • Milling rate of materials with argon ion polishing

    [1] Arda Genç, Phase Stability in Metallic Multilayers, Ohio State University, Dissertation, 2008. [2] Roman Adam, Stefan Benacka, Stefan Chromik, Marian Darula, Vladimir Strbik, and Stefan Gazi, Ivan

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  • Mechanical Properties of β-Ti-35Nb-2.5Sn Alloy Synthesized

    A developed Ti-35 pct Nb-2.5 pct Sn (wt pct) alloy was synthesized by mechanical alloying using high-energy ball-milled powders, and the powder consolidation was done by pulsed current activated sintering (PCAS). The starting powder materials were mixed for 24 hours and then milled by high-energy ball milling

  • Synthesis of Nanomaterials by High Energy Ball Milling

    Skyspring Nanomaterials, Inc. It is a ball milling process where a powder mixture placed in the ball mill is subjected to high-energy collision from the balls. This process was developed by Benjamin and his

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  • Z. LIU Harbin Institute of Technology, Harbin HIT

    Z. G. Liu. Harbin Institute of Tribological behavior study on Ti-Nb-Sn/hydroxyapatite composites in simulated body fluid solution Effect of milling time on microstructure of Ti35Nb2.5Sn

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    specific rare elements (F, Rb, Li, Sn, Be, W, and Mo) relative to normal granites. They may also have elevated concentrations of B, Nb, Ta, U, Th, and REE. Mineralized veins and greisens are usually

  • Why Sn doping significantly enhances the dielectric

    Through appropriate doping, the properties of BaTiO3-based ferroelectrics can be significantly enhanced. To determine the physical process induced by the doping of Sn atoms in Ba(Ti0.8Sn0.2)O3, we